:root {
  
  --color-bg: #ffffff;
  --color-text: #444444;
  --color-heading: #333333;
  --color-accent: #4a71aa; 
  --color-accent-dark: #3a5986; 
  --color-accent-contrast: #ffffff;
  --color-footer-bg: #f2f2f2;
  --color-footer-text: #555555;
  --color-footer-muted: #aaaaaa;
  --color-border: #999999;

  
  --font-sans: Verdana, Geneva, sans-serif; 

  
  --container-max: 1320px;
  --content-max: 900px;

  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(0.9375rem, 0.9rem + 0.2vw, 1rem); 
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: underline; text-decoration-color: transparent; transition: text-decoration-color .15s ease, color .15s ease; }
a:hover, a:focus-visible { text-decoration-color: currentColor; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

h1, h2, h3, h4, h5 {
  color: var(--color-heading);
  font-weight: 400;
  line-height: 1.25;
  margin: 0 0 .6em;
}

h1 { font-size: clamp(1.75rem, 1.5rem + 1.2vw, 2.375rem); }   
h2 { font-size: clamp(1.5rem, 1.3rem + 0.9vw, 2rem); }        
h3 { font-size: clamp(1.35rem, 1.2rem + 0.7vw, 1.75rem); }    
h4 { font-size: clamp(1.15rem, 1.05rem + 0.5vw, 1.5rem); }    
h5 { font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem); }    

p { margin: 0 0 1em; }
ol, ul { padding-left: 1.4em; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 0.6rem + 1.6vw, 2.5rem);
}

.topbar {
  height: 33px; 
  background: var(--color-accent);
}

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid #eee;
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.1rem;
}
.logo { display: inline-flex; }
.logo img { width: 160px; height: auto; }
@media (min-width: 640px) { .logo img { width: 200px; } }

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px; height: 38px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  cursor: pointer;
}
.nav-toggle-bar {
  display: block;
  height: 2px;
  margin-inline: 8px;
  background: var(--color-text);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: clamp(1rem, 0.5rem + 1.5vw, 2.25rem);
}
.site-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: .875rem;
  letter-spacing: .02em;
  padding-block: .35rem;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover, .site-nav a:focus-visible { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.site-nav li.is-active a { color: var(--color-accent); border-bottom-color: var(--color-accent); }

@media (max-width: 767px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: var(--color-bg);
    border-bottom: 1px solid #eee;
    max-height: 0;
    overflow: hidden;
    transition: max-height .25s ease;
  }
  .site-nav.is-open { max-height: 20rem; }
  .site-nav ul { flex-direction: column; gap: 0; padding: .5rem clamp(1rem, 0.6rem + 1.6vw, 2.5rem) 1rem; }
  .site-nav a { display: block; padding-block: .6rem; }
  .site-header__inner { position: relative; }
}
@media (min-width: 768px) {
  .nav-toggle { display: none; }
  .site-nav { display: block !important; max-height: none !important; position: static; border: 0; }
}

.hero { width: 100%; overflow: hidden; background: #ddd; margin-top: 1rem; }
.hero picture, .hero img { width: 100%; height: 100%; }
.hero img {
  aspect-ratio: 2.85 / 1; 
  object-fit: cover;
  max-height: 60vh;
}

.page-header {
  
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
  padding-block: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 2rem;
}
.page-header h1 { margin: 0; }

main { display: block; }
.content-col { max-width: var(--content-max); margin-inline: auto; } 

.entry-content:not(.entry-content--full) p,
.entry-content:not(.entry-content--full) ol,
.entry-content:not(.entry-content--full) ul { max-width: var(--content-max); }
.entry-content .fineprint { font-size: .8em; color: var(--color-footer-text); }

.entry-content p {
  text-align: justify;
  -webkit-hyphens: auto;
  hyphens: auto;
  hyphenate-limit-chars: 6 3 3;
}

.entry-content .lead { font-size: 1.125em; }

.signature { margin-top: 1.5rem; font-style: italic; }

.content-diagram { max-width: var(--content-max); margin-block: 2rem; margin-inline: auto; }
.content-diagram figcaption { font-size: .8em; color: var(--color-footer-text); margin-top: .5rem; }

.homepromo {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: clamp(1rem, 0.6rem + 1.5vw, 1.75rem);
  margin-block: clamp(2rem, 1.5rem + 2vw, 3.5rem);
}
.homepromo-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .9rem;
  text-align: center;
  padding: 2.25rem 1rem 2rem;
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid #ececec;
  border-radius: 14px;
  overflow: hidden;
  transition: transform .4s cubic-bezier(.22, 1, .36, 1), box-shadow .4s cubic-bezier(.22, 1, .36, 1), border-color .4s ease;
}
.homepromo-item::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  height: 3px;
  width: 0;
  background: var(--color-accent);
  border-radius: 3px 3px 0 0;
  transform: translateX(-50%);
  transition: width .45s cubic-bezier(.34, 1.56, .64, 1);
  z-index: 0;
}
.homepromo-item__icon, .homepromo-item__label {
  position: relative;
  z-index: 1;
}
.homepromo-item__icon {
  width: clamp(64px, 8.5vw, 84px);
  height: clamp(64px, 8.5vw, 84px);
  display: grid;
  place-items: center;
  border-radius: 50%;
  
  background: #edf1f8;
  box-shadow: inset 0 0 0 1.5px rgba(74, 113, 170, .28), 0 2px 8px -4px rgba(74, 113, 170, .25);
  transition: background .4s cubic-bezier(.22, 1, .36, 1), transform .4s cubic-bezier(.22, 1, .36, 1), box-shadow .4s ease;
}
.homepromo-item__icon svg {
  width: 58%;
  height: 58%;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke .35s ease;
  overflow: visible;
}
.homepromo-item__icon svg path,
.homepromo-item__icon svg circle,
.homepromo-item__icon svg line,
.homepromo-item__icon svg polygon {
  stroke-dasharray: 130;
  stroke-dashoffset: 0;
}

.homepromo-item__icon svg.icon-solid { fill: var(--color-accent); stroke: none; }
.homepromo-item__icon svg.icon-solid path { stroke: none; stroke-dasharray: none; }
.homepromo-item__label {
  font-size: 1.05rem;
  transition: color .35s ease, letter-spacing .35s ease;
}

@media (hover: hover) {
  .homepromo-item:hover,
  .homepromo-item:focus-visible {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 18px 34px -18px rgba(74, 113, 170, .5), 0 2px 10px rgba(74, 113, 170, .12);
  }
  .homepromo-item:hover::before,
  .homepromo-item:focus-visible::before { width: 2.75rem; }
  .homepromo-item:hover .homepromo-item__icon,
  .homepromo-item:focus-visible .homepromo-item__icon {
    background: var(--color-accent);
    transform: scale(1.08);
    box-shadow: 0 8px 20px -8px rgba(74, 113, 170, .55);
  }
  .homepromo-item:hover .homepromo-item__icon svg,
  .homepromo-item:focus-visible .homepromo-item__icon svg { stroke: #fff; }
  .homepromo-item:hover .homepromo-item__icon svg.icon-solid,
  .homepromo-item:focus-visible .homepromo-item__icon svg.icon-solid { fill: #fff; stroke: none; }
  .homepromo-item:hover .homepromo-item__icon svg.icon-solid path,
  .homepromo-item:focus-visible .homepromo-item__icon svg.icon-solid path { animation: none; }
  .homepromo-item:hover .homepromo-item__icon svg path,
  .homepromo-item:hover .homepromo-item__icon svg circle,
  .homepromo-item:hover .homepromo-item__icon svg line,
  .homepromo-item:hover .homepromo-item__icon svg polygon,
  .homepromo-item:focus-visible .homepromo-item__icon svg path,
  .homepromo-item:focus-visible .homepromo-item__icon svg circle,
  .homepromo-item:focus-visible .homepromo-item__icon svg line,
  .homepromo-item:focus-visible .homepromo-item__icon svg polygon {
    animation: homepromo-draw .55s cubic-bezier(.22, 1, .36, 1) both;
  }
  .homepromo-item:hover .homepromo-item__label,
  .homepromo-item:focus-visible .homepromo-item__label {
    color: var(--color-accent-dark);
    letter-spacing: .01em;
  }
}
@keyframes homepromo-draw {
  from { stroke-dashoffset: 130; }
  to { stroke-dashoffset: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .homepromo-item,
  .homepromo-item::before,
  .homepromo-item__icon,
  .homepromo-item__icon svg,
  .homepromo-item__label { transition: none; }
  .homepromo-item:hover .homepromo-item__icon svg path,
  .homepromo-item:hover .homepromo-item__icon svg circle,
  .homepromo-item:hover .homepromo-item__icon svg line,
  .homepromo-item:hover .homepromo-item__icon svg polygon,
  .homepromo-item:focus-visible .homepromo-item__icon svg path,
  .homepromo-item:focus-visible .homepromo-item__icon svg circle,
  .homepromo-item:focus-visible .homepromo-item__icon svg line,
  .homepromo-item:focus-visible .homepromo-item__icon svg polygon { animation: none; }
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 480px));
  justify-content: center;
  gap: clamp(1rem, 0.6rem + 1.5vw, 2rem);
  list-style: none;
  margin: 0;
  padding: 0;
}
@media (min-width: 560px) {
  .portfolio-grid { grid-template-columns: repeat(2, minmax(0, 480px)); }
}
@media (min-width: 900px) {
  .portfolio-grid { grid-template-columns: repeat(4, minmax(0, 480px)); }
}
.portfolio-grid li { margin: 0; }
.portfolio-card {
  display: block;
  text-decoration: none;
  color: var(--color-text);
}
.portfolio-card__cover {
  display: block;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 8px;
}

.portfolio-card__cover img { width: 100%; height: 100%; object-fit: contain; transition: transform .35s ease; }
@media (hover: hover) {
  .portfolio-card:hover .portfolio-card__cover img,
  .portfolio-card:focus-visible .portfolio-card__cover img { transform: scale(1.05); }
}
.portfolio-card h5 { margin-top: .75rem; margin-bottom: 0; font-size: 1rem; }

.portfolio-detail {
  display: grid;
  grid-template-columns: minmax(0, 42%) minmax(0, 1fr);
  gap: clamp(1.5rem, 1rem + 2vw, 3rem);
  align-items: start;
}
@media (max-width: 700px) {
  .portfolio-detail { grid-template-columns: 1fr; }
}
.portfolio-detail__cover {
  display: block;
  width: fit-content;
  max-width: 100%;
  border: 0;
  padding: 0;
  cursor: zoom-in;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .15);
}
.portfolio-detail__cover img { display: block; max-width: 100%; height: auto; max-height: 70vh; }
.portfolio-detail__meta { color: var(--color-footer-text); font-size: .9em; margin-bottom: 1.2em; }
.portfolio-detail__back { display: inline-block; margin-top: 1.5rem; font-size: .9em; }

.portfolio-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: .75rem;
  padding-top: .75rem;
  border-top: 1px solid var(--color-border);
  font-size: .9em;
}
.portfolio-nav__next { text-align: right; }

.lightbox {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 5vh 5vw;
  background: rgba(20, 20, 20, .88);
  z-index: 100;
}
.lightbox.is-open { display: flex; }
.lightbox img { max-width: 100%; max-height: 90vh; width: auto; border-radius: 4px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.lightbox__close {
  position: absolute;
  top: 1.25rem; right: clamp(1rem, 2vw, 2rem);
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 0;
  background: rgba(255,255,255,.12);
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}
.lightbox__close:hover, .lightbox__close:focus-visible { background: rgba(255,255,255,.25); }

.contact-form { margin-top: 1.5rem; }
.form-field { margin-bottom: 1.25rem; }
.form-field label { display: block; margin-bottom: .35rem; font-size: .9rem; }
.form-field input[type="text"],
.form-field input[type="email"],
.form-field textarea {
  width: 100%;
  font: inherit;
  color: #000;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: .6rem .75rem;
}
.form-field textarea { resize: vertical; min-height: 8rem; }
.form-field--checkbox { display: flex; gap: .6rem; align-items: flex-start; }
.form-field--checkbox input { margin-top: .3em; }
.form-field--checkbox label { margin-bottom: 0; font-size: .875rem; }

.form-field--hp {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
}

.btn-submit {
  font: inherit;
  font-size: .95rem;
  color: var(--color-accent-contrast);
  background: var(--color-accent);
  border: 0;
  border-radius: 4px;
  padding: .75rem 1.75rem;
  cursor: pointer;
  transition: background .2s ease;
}
.btn-submit:hover, .btn-submit:focus-visible { background: var(--color-accent-dark); }
.btn-submit:disabled { opacity: .6; cursor: progress; }

.form-status { margin-top: 1rem; font-size: .9rem; }
.form-status[data-state="ok"] { color: #1a7a3c; }
.form-status[data-state="error"] { color: #b3261e; }

.site-footer {
  margin-top: clamp(3rem, 2rem + 3vw, 5rem);
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  font-size: .875rem;
}
.site-footer .container {
  padding-block: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem 1.5rem;
}
.footer-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
}
.footer-nav a { color: var(--color-footer-text); text-decoration: none; }
.footer-nav a:hover, .footer-nav a:focus-visible { color: var(--color-accent); text-decoration: underline; }
.footer-copy { margin: 0; color: var(--color-footer-muted); font-size: .8125rem; }

.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 0.6rem + 1.5vw, 1.75rem);
  margin-block: 1rem 2rem;
}
@media (min-width: 560px) {
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 920px) {
  .tool-grid { grid-template-columns: repeat(3, 1fr); }
}
.tool-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: .35rem;
  padding: 2rem 1.5rem 1.75rem;
  background: var(--color-bg);
  border: 1px solid #ececec;
  border-radius: 14px;
  transition: transform .4s cubic-bezier(.22, 1, .36, 1), box-shadow .4s cubic-bezier(.22, 1, .36, 1), border-color .4s ease;
}
.tool-card__icons {
  display: flex;
  gap: .75rem;
  margin-bottom: .65rem;
}
.tool-card__icons picture { display: block; }
.tool-card__icons img {
  width: 64px;
  height: auto;
  display: block;
}
.tool-card__title {
  font-size: 1.1rem;
  margin: 0;
  color: var(--color-accent-dark);
}
.tool-card p {
  margin: 0;
  font-size: .95rem;
  max-width: 40ch;
  
  text-align: center;
  hyphens: manual;
  -webkit-hyphens: manual;
}
@media (hover: hover) {
  .tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 16px 30px -18px rgba(74, 113, 170, .45), 0 2px 8px rgba(74, 113, 170, .1);
  }
}
@media (prefers-reduced-motion: reduce) {
  .tool-card { transition: none; }
}